1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "build/build_config.h" 6 #include "chrome/browser/first_run/upgrade_util.h" 7 #include "components/startup_metric_utils/startup_metric_utils.h" 8 9 // The entry point for all invocations of Chromium, browser and renderer. On 10 // windows, this does nothing but load chrome.dll and invoke its entry point in 11 // order to make it easy to update the app from GoogleUpdate. We don't need 12 // that extra layer with on linux. 13 14 #if defined(ADDRESS_SANITIZER) && defined(GOOGLE_CHROME_BUILD) 15 // Default AddressSanitizer options for the official build. These do not affect 16 // tests or non-official Chromium builds. 17 // - disable the strict memcmp() checking (http://crbug.com/178677 and 18 // http://crbug.com/178404). 19 // - set the malloc_context_size (i.e. the size of stack traces collected by 20 // ASan for each malloc/free) to 5. These stack traces tend to accumulate 21 // very fast in applications using JIT (v8 in Chrome's case), see 22 // https://code.google.com/p/address-sanitizer/issues/detail?id=177 23 // - disable the in-process symbolization, which isn't 100% compatible with 24 // the existing sandboxes and doesn't make much sense for stripped official 25 // binaries. 26 const char *kAsanDefaultOptions = 27 "malloc_context_size=5 strict_memcmp=0 symbolize=false"; 28 29 // Override the default ASan options for the Google Chrome executable. 30 // __asan_default_options should not be instrumented, because it is called 31 // before ASan is initialized. 32 extern "C" 33 __attribute__((no_sanitize_address)) __asan_default_options()34const char *__asan_default_options() { 35 return kAsanDefaultOptions; 36 } 37 #endif 38 39 extern "C" { 40 int ChromeMain(int argc, const char** argv); 41 } 42 main(int argc,const char ** argv)43int main(int argc, const char** argv) { 44 startup_metric_utils::RecordExeMainEntryTime(); 45 int return_code = ChromeMain(argc, argv); 46 47 #if defined(OS_LINUX) 48 // Launch a new instance if we're shutting down because we detected an 49 // upgrade in the persistent mode. 50 upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded(); 51 #endif 52 53 return return_code; 54 } 55